<p>{{_phone}}</p>
<input #phone type="number" placeholder="请输入电话号码" />
<div>{{phone.constructor.name}}
    <button (click)="callPhone(phone.value)">提交</button>
</div>
<hr>
<p>{{_phone2}}</p>
<input ref-phone2 type="number" placeholder="请输入电话号码" />
<div>
    <button (click)="callPhone2(phone2.value)">提交</button>
</div>